The reburial will take place around 2 p.m. on Monday at her gravesite in the Newaygo City Cemetery, according to a media release sent out by David Schock, who has been documenting the Siders case while working closely with Siders’ father, Bob Siders, of Newaygo.

Bob Siders said Thursday morning that "it's another step" in the investigation.

"I've known since day one we might have had to exhume her and we felt there might be something there that would lead to a conclusion. We were OK with it," he said.

Siders said it "was worthwhile" no matter what comes out of the process.

Schock is a former Hope College professor who started the website, Delayed Justice, to bring attention to cold cases in the area.

Shannon Siders, then 18, was last seen alive on July 18, 1989. Her badly decomposed body was found on Oct. 15, 1989, in the Manistee National Forest off M-82 and Thornapple Road in Newaygo County's Brooks Township.

Her body was exhumed from the cemetery on July 26 as part of the criminal investigation.

Siders body was under the examination of Dr. Norman Sauer, a forensic anthropologist from Michigan State University, and Dr. Brian Hunter, a pathologist from Lansing.

It wasn't clear early Thursday what type of evidence, if any, was discovered during that examination to help authorities solve her homicide.

The date of her reburial is the 23rd anniversary of the discovery of her body.

Michigan State Police Detective Lt. Cameron Henke, commander of the Sixth District Special Investigation section, has led a task force that was assembled in September 2011 to help solve the Siders case. The team consists of Michigan State Police investigators and includes the Newaygo County Sheriff's Office, Newaygo City Police Department and Newaygo County Prosecutor Robert Springstead.

Anyone with information regarding Siders' murder is asked to call Detective Sgt. Scott Rios of the Michigan State Police Hart Post-Newaygo Detachment at (231) 873-3584 ext. 222 or call the toll-free tip line at 1-855-830-6848.